1, as shown in the figure, this is a local map of Changzhou near our school, Zhang Xiaochun, an eighth-grade classmate.

When I went back to school on Sunday, it was raining outside and I passed the intersection of Beihuan Road and Xintang Road.

On the way to Lukou Foreign Language School, he felt the rain falling vertically.

The weather situation at that time in the following statement is correct.

A, the southwest wind is blowing outside at this time.

There is no wind outside at this time.

C. At this time, the northeast wind is blowing outside.

D. At this time, the northwest wind is blowing outside.

On National Day, Xiao Wang is going to travel from Changzhou to Suzhou. After getting on the bus and sitting down, he found his seat facing the garage. He looked at another train on the platform (the train was marked "Nanjing-Shanghai"). For a while, he felt his train moving slowly forward, but after two minutes, he didn't feel the vibration during the train running. Looking closely, he found that his train didn't leave, and the train on the platform didn't leave either. The following statement is correct about Xiaohua's initial feeling that his train has left and the destination of another train.

A At first, Xiaohua chose another train as a reference, and the other train was bound for Nanjing.

B At first, Xiaohua chose her train as a reference, and the other train was bound for Nanjing.

C at first, Xiaohua chose another train as a reference, and the other train was bound for Shanghai.

At first, Xiaohua chose her train as a reference, and the other train was bound for Shanghai.

Xiaoming went to Nanjing by coach. His seat is in the last row. At this time, the bus is moving forward at a constant speed. He walked straight to the front of the car at normal speed to pour water, and then walked straight back to his seat at the same speed. If it takes 8 seconds to pour water, it takes 8 seconds to return to your seat.

A is equal to 8S B, less than 8S C and greater than 8S D, so it is impossible to judge.

When you stand at the bus stop, sometimes you will see a car honking its horn in front of you. The following observation about the car whistling when it is getting closer and closer to you is correct.

A, the loudness is getting louder and louder, and the tone is getting higher and higher.

B, the loudness is getting louder and louder, and the tone is unchanged.

C, the loudness is constant, and the tone is getting higher and higher.

D, loudness and tone remain unchanged.

5. Among the following figures, those that are not in line with the actual situation are

A. When it is cold, pour some hot water into the bowl, and a lot of white steam will come out on the water.

B. Heat the bottom of the pot with flame, and the water in the pot will roll as shown in the picture.

C. Popsicles taken out of the refrigerator in summer will steam.

D. Heat the bottleneck of the flask with flame. When the water above boils, the tadpoles in the bottle below are still swimming freely.

6, the following units about length, time and speed, belongs to the international unit of a group is

a、km； h； Kilometers/hour b, m; s； m/s C、m； h； m/s D、m； s； Kilometer/hour

7. Which of the following data is the size of your classroom interior space (that is, classroom volume) closest to?

A, 25 m3 b, 250 m3 c, 2500 m3 d, 25000 m3.

8. Press one end of the scale tightly on the desktop, and the other end extends out of the desktop. Move the scale to make it vibrate. It is found that the longer the extension, the slower the vibration of the scale. The harmonica is a musical instrument made by using this principle. It produces sound by vibrating a metal sheet. In the process of playing the music clip "12 34 56 i",

A, the elastic sheet metal is getting shorter and shorter, and the tone is getting higher and higher.

B, the elastic metal sheet is getting longer and longer, and the tone is getting higher and higher.

C, the elastic sheet metal is getting shorter and shorter, and the tone is getting lower and lower.

D, the longer the metal piece is played, the lower the tone.

9. The indoor temperature is 20 degrees Celsius. At this time, cotton soaked in a small amount of alcohol is wrapped on the glass bulb of the thermometer. With the rapid evaporation of alcohol, which of the following pictures correctly reflects the change of thermometer reading with time?

10, almost all my classmates loved watching Journey to the West TV series when they were young. In some stage performances, we often see smoky man-made "fairyland". The relevant statement about this phenomenon is correct.

A, it is a non-toxic and tasteless "white smoke" directly formed by special substances arranged by the director, and then the concentration is reduced until it disappears.

B, the essence of white "smoke" is small water droplets.

C, the process of forming "smoke" needs to absorb heat

D, this kind of "smoke" will affect the health of stage actors, and we generally don't come into contact with this substance in real life.

1 1, some mythological scenes in the TV series Journey to the West seem awkward to us now, but some superb TV pictures produced now are naturally much smoother, thanks to the application of computer technology in film production. But how did the director achieve the Monkey King's flying somersault to the cloud when the application of computer technology was still immature at that time? The background canvas is actually used here. In order to realize the Monkey King's flying and somersault to the cloud at the same time, which of the following practices is most in line with the actual situation at that time?

A, "Monkey King" stands on the stage and somersaults, while pulling up the canvas with the sky as the background.

B, "Monkey King" stands on the stage and somersaults, while pulling down the canvas of the sky background.

C, let the canvas in the sky background stand still, pull the Monkey King up with a rope, and perform somersaults at the same time.

D, let the canvas of the sky background stand still, let the Monkey King fall from the sky and perform somersaults at the same time.

12. A train is running in a straight line at a constant speed. If the distance it travels in 1 minute is 900m, what is the speed in the next 2 minutes?

a、900 B、 1800 C、 15 D、30

13, two cars, A and B, are driving in a straight line at a constant speed on a horizontal road. The distance ratio of travel is 2: 3, and the time ratio is 3: 5. Then the speed ratio of two cars a and b is.

a、2:5 B、 10:9 C、9: 10 D、5:2

14, there must be two sounds with the same vibration frequency.

A, the same timbre b, the same amplitude c, the same tone d and the same loudness.

15, in order to compare the speed of two objects, then

A, only compare the distance b between two objects and the movement time of two objects.

C, as long as you compare the distance d passed per unit time, all the above methods can be used.

16. The cactus growing in the desert has needle-like leaves, which is the result of natural selection. This structure is more beneficial.

A, prevent wild animals from eating B, increase the contact area with sunlight is beneficial to photosynthesis.

C, reduce water evaporation d, increase surface area, and fully absorb water in the desert.

In the 17 and 100 meter races, which way is more accurate in timing?

Start timing as soon as you hear the gunshots. B, see the starting gun smoking.

C, see the starter's little red flag floating down and start timing. D, all the above methods can be used.

18, the following facts cannot clearly show that sound has energy.

A vibrating horn can blow out the flame of a candle.

B, cars pass by the roadside, and the windows of roadside residents hum.

C, wonderful music can cultivate people's hearts.

D, crushing the stones in the body by ultrasonic waves.

19, Xiao Ming is boiling water in the household electric kettle. For the first time, he boiled half a pot of water until it boiled. The second time, he still used this kettle to boil a pot of water until it boiled. Then the relationship between water temperature and time is correct (the first time is a thin line, the second time is a thick line).

A B C D

20, liquefied petroleum gas (LPG) is in the form of liquid with pressurized method stored in the cylinder. Residents have found that when bottled liquefied gas is used in winter, when the liquid is almost used up, even if the valve is turned to the maximum in the morning and evening when cooking, the valve of the gas stove is turned to the maximum and the firepower is very small. Firepower is normal only when it is used at noon. The statement about this phenomenon is correct.

A, the temperature is low in the morning and evening, and the liquid in the bottle cannot evaporate.

B, there are more impurities in liquefied gas in winter, and the proportion of gas used for combustion is reduced.

C, the temperature is high at noon, and the burning effect of liquefied gas is better than that in the morning and evening, so the firepower is large.

D, the temperature is higher at noon than in the morning and evening, the evaporation of liquid in the bottle is accelerated, and the gas supply speed is accelerated.

Two. Fill in the blanks (38 points 1 2 1 30 points, 2 points, 3 points1-32)

2 1, as shown in the figure, the same object uses a and b with different minimum scales.

Measured with a scale, the dividing value of Figure A is

_ _ _ _ _ _ \ \, the reading _ _ _ _ _ _ _ _ _ cm；; The scale value of chart B is _ _ _ _ _ _ _ \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u \ u, reading.

22. The normal walking speed of people is 4 _ _ _ _ _ _, and the normal riding speed is15 _ _ _ _ _. (Fill in the appropriate speed unit)

23. When water is boiling, the two physical state changes that occur successively are _ _ _ _ _ and _ _ _ _ _ _. The former needs _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Zhang Ming bought a bus ticket to Hangzhou on Sunday. On Friday night, he listened to the weather forecast in Changzhou: "... the lowest temperature tomorrow morning is 2℃, and the highest temperature tomorrow is18℃ ...". The next morning, the spring was bright, and when I got on the bus, I found that there were already many people on the bus. Except the window next to the driver, all the passengers' windows are closed, and the windows are blurred, so people outside can't be seen clearly. This is because there are small water droplets on the _ _ _ _ _ surface of the window. After getting on the road, Zhang Ming found that the driver's window was still slightly open. At nine o'clock in the morning, the sunshine outside the car and the mountain village clearly shone into the eyes. In the above process, the two state changes on the window are _ _ _ _ _ _ and _ _ _ _ _. The driver slightly opens the window next to him when driving in the morning to prevent _ _ _ _ _ _ _ _ _ _. The car entered Zhejiang along the expressway, and it began to rain in Mao Mao. Suddenly, a vague thing appeared on the window. Zhang Ming looked at the rain falling on the window glass and thought of the high-speed car. He immediately had a correct explanation, which was due to _ _ _ _ _ _ _ _ _

25. In the story of the tortoise-rabbit race, if the race distance is 6 10m, the tortoise has climbed 1 hour. The rabbit first ran 100m in 20s, then slept 1 hour under a big tree, and finally ran the remaining distance in 40s, and finally arrived. In this story, to compare the average speed of two movements, you can judge by the same distance ratio _ _ _ _ _ _ _ _, or you can compare them by calculating their average speed. The average speed of the tortoise is _ _ _ _ _ _ _ km/h, and that of the rabbit is _ _ _ _ _ _ _ km/h.

26. A train with a length of 600m, with a speed of 30m/s, needs _ _ _ _ _ s to completely pass through a tunnel with a length of 1500m, and the travel time of all trains in the tunnel is _ _ _ _ _ _ _ _.

27. Name two kinds of ultrasonic instruments: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

28. Name two common objects _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

29. Air France Concorde used to be the fastest passenger airliner in the world. During a trip, when the plane reached cruising altitude, passengers took out their cameras and took pictures of the display screen in the cockpit showing the flight speed, altitude and temperature outside the cabin. The display reads: "Mach 2, speed 1350 miles per hour; Flying at an altitude of 58,000 feet (17678m); The temperature is MINUS 6 1 degree Celsius. " . Mach 1 is the speed of sound, and the speed of sound here refers to the speed of sound in air under normal circumstances. The speed of the plane is _ _ _ _ _ m/s, which is equivalent to _ _ _ _ _ km/h. Although the earth is large (the equatorial radius is about 6378 km), it has undoubtedly become a global village in front of such supersonic planes. If you want to take this plane to the farthest place on the earth, according to the data displayed on the display screen (π is 3. 14, and the calculation result is rounded to three decimal places), the plane will fly for _ _ _ _ _ hours.

30. As shown in the figure, the music score in the figure is selected from Richard Clayderman's piano music Whispering in Autumn, and the upper left J=70 means playing 70 beats per minute. This piece of music has ***54 bars, with four beats per bar. This is one of three bars, the upper one is the treble spectrum, and the lower one is the bass spectrum. The higher the position of notes in the same spectrum, the higher the sound. Please carefully observe the relevant information and instructions provided in the spectrum and answer the following questions.

(1) Find the highest note in the three bars in the picture, draw a circle on it and a box on the lowest note.

(2) It takes _ _ _ _ _ _ _ s to play this song according to the standard. (Keep 1 digit after decimal point)

This is a piano piece that Li Mingbo never tires of listening to. In the evening, he went to his aunt's house for a walk. As he walked, he kept repeating the song. In order to feel the melody of music, he takes a step forward every time he hears a beat. If the distance of each step is 60cm and the aunt's house is 700m away from his house, then the walking speed of Li Ming is _ _ _ _ m/s. If he walks to his aunt's house at this speed, he will play this music _ _ _ _ _ times. (Ignore the interval of repeated playback)

3 1. Sound will be reflected after encountering obstacles. The speed of sound propagation in seawater is 1500m/s, and the sound sent by the ocean exploration ship to the seabed will be reflected by the seabed for 2S. The depth of seawater here is _ _ _ _ _ _ _ _.

32. As shown in the figure, the readings of two thermometers A and B are: A: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. (When reading, the line of sight should be flush with the top of convex liquid surface. )

Iii. Experiment and Design (12)

33. Design an experiment with alcohol, cotton and thermometer. And explain the physical truth embodied in this experiment.

34. When exploring the boiling experiment of water, what would you do to save the experiment time? Name two feasible methods.

IV. Calculation (10, 6 points for the 35th question, 4 points for the 36th question)

35. At the 28th Olympic Games, China athlete Liu Xiang won the world champion of 1 10 meter hurdles with a score of12.9/sec. What is his average speed in the competition?

36. As shown in the picture, this is a satellite image after a typhoon was generated this year. The center of the cloud is the typhoon center. Within 24 hours after the typhoon was generated, its center moved to the northwest, and the black circle was the main influence area of the typhoon. If the typhoon center moves in a straight line at a uniform speed in the direction shown in the figure, and the influence radius remains the same, it will be represented by drawing: When the typhoon center moves to what position, will it affect our city? (Drawing traces must be preserved, and the center of the typhoon is indicated by solid lines) How many hours after the typhoon is generated will it affect our city by using the relevant information provided in the figure? (There should be an explanation of the analysis, measurement and calculation of the image, only look at the results without scoring, and the answer does not retain decimals. )

Scoring criteria and answers

First, multiple-choice questions (2 points per question)

The title is 1 23455 6789 10.

Answer A A A A B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B. b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b

The title is11213141516171819 20.

Answer B C B C C C B C B D

Second, fill in the blanks

2 1, 1, 1.7( 1.6 or 1.8), 0. 1,1.73 (1.

22, km/hour, km/hour

23. Evaporation, liquefaction, absorption and release

24, liquefaction, vaporization, front glass liquefaction phenomenon (or small water droplets), the rapid evaporation of water on the glass outside the window makes the glass temperature drop, and the water vapor in the car liquefies into small water droplets when it meets cold.

25. Time, 0.6 1, 0.6

26、70,30

27. Ultrasonic velocimeter and ultrasonic diagnostic instrument (sonar, ultrasonic cleaning machine and ultrasonic welding machine are all used in production and life, and they are all correct. Declarative statements are allowed when describing instruments, such as ultrasonic instruments for measuring speed, but the words "instrument does not appear" are not scored).

28, large excavators, car horns (as long as it belongs to the noise in daily life)

29, 680, 2448, 8.204 (this answer is unique, and any discrepancy with this answer means that the process is wrong, so it will not be scored).

30、

3 1、 1500

32、 16℃、— 14℃

Third, experiment and design.

33. Soak the cotton in alcohol, then take out the alcohol cotton and wrap it outside the glass bulb of the thermometer, and observe the change of the thermometer reading. This experiment can show that liquid evaporation needs heat absorption. As long as the students answer correctly and express correctly, they will be given full marks. If there is a scientific error in the expression, deduct 1-2 points on the basis of the given points)

34. Reduce the amount of water; Increase firepower; Cover; Use warm water (as long as the method is feasible, all points are given, and each method has 3 points. Deduct 2 points if it is feasible in theory but difficult in practice)

35, v = s/t =110m/12.91s = 8.52m/s (formula 3, calculate and substitute 3 points, the result is 2 points. If it is 8.5m/s, the result is correct; if it is 9m/s, 2 points will be deducted ... Only write the formula without substituting the data; if there is no result, no score will be scored. If the formula is not written or incorrectly expressed, but the process and result are correct, only 2 points will be deducted from the formula. The formula is right, but the substitution and the result are wrong. The formula can be scored 3 points. The calculation substitution process can be carried out without unit, but the result must be with unit. If the result does not have a unit, the answer can be regarded as a result with a unit. Known deficiencies and answers are not deducted)

36、

(1) About drawing: We need to draw a line that the typhoon center moves in a straight line at a constant speed, and then make a circle with Changzhou as the center and the radius of influence as the radius, and intersect with the moving line at point C, which is the typhoon center. (There is no trace of the movement route and compasses in the picture, which does not meet the requirements in the question, so don't score. )

Measure the distance between AB and AC with a scale. (Lack of this step does not score. If the measurement step is not written, but the distance is used in the calculation, no points will be deducted. Because of the measurement error, students may guess the results that meet the answer range without the correct analysis process, so the results directly obtained without the analysis and solution process do not score. ) calculation method: t = (AC/AB) * t = (3.3cm/1.1cm) * 24h = 72h. (On the basis of correct measurement and calculation, the result is considered to be correct in the range of 60-80h. )